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Analysis

  • max time kernel
    143s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2022, 00:26

General

  • Target

    fd9b43efef533221aade813a259d23d71eb693945ffcb37cc247f5265f95a8b0.exe

  • Size

    446KB

  • MD5

    683020f69cb6ebed512a58d976ac1d1d

  • SHA1

    68ed5b0ec8342177a805bf24f1bfbd4766f61881

  • SHA256

    fd9b43efef533221aade813a259d23d71eb693945ffcb37cc247f5265f95a8b0

  • SHA512

    efd88663ea97b4f2b6c558eaf67e0466811a317fbedffeda9c813aa7644e93d289b9e2a65c25ec5283fc148532b421c037e047ffb45e0fcdacedff3ddb7b9c92

  • SSDEEP

    6144:XzfSLywd45TP8ZM4oGX1k8OHhggX6otIIRlCxFEbmdcT6ZtOUuy7c4yYjILb/7:2Ly24BP8xV1kvnRmQoLEPT6SUijX

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fd9b43efef533221aade813a259d23d71eb693945ffcb37cc247f5265f95a8b0.exe
    "C:\Users\Admin\AppData\Local\Temp\fd9b43efef533221aade813a259d23d71eb693945ffcb37cc247f5265f95a8b0.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:620
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:456
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2232
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4752
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1280
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2828
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1468
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3656
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2820
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4068
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4040
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:4316
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2324

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsy8360.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf4afeeef7581b8aaa908af038f0be87

            SHA1

            abf815a433bb36bcdd08eb92b0b60869b28b439d

            SHA256

            9b6135cf556f05253370e6be2876715e12f1a19dbecc97cfb5bd1de25ae981bd

            SHA512

            6ad2b49cec212ed0ddc56c9b34dca59d896078c45ae600b30aedeae98a07077766ba255d21ba0cd44c3cb3e07ae3c02454c149251500ca50a26d0e566ec8129a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf4afeeef7581b8aaa908af038f0be87

            SHA1

            abf815a433bb36bcdd08eb92b0b60869b28b439d

            SHA256

            9b6135cf556f05253370e6be2876715e12f1a19dbecc97cfb5bd1de25ae981bd

            SHA512

            6ad2b49cec212ed0ddc56c9b34dca59d896078c45ae600b30aedeae98a07077766ba255d21ba0cd44c3cb3e07ae3c02454c149251500ca50a26d0e566ec8129a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf4afeeef7581b8aaa908af038f0be87

            SHA1

            abf815a433bb36bcdd08eb92b0b60869b28b439d

            SHA256

            9b6135cf556f05253370e6be2876715e12f1a19dbecc97cfb5bd1de25ae981bd

            SHA512

            6ad2b49cec212ed0ddc56c9b34dca59d896078c45ae600b30aedeae98a07077766ba255d21ba0cd44c3cb3e07ae3c02454c149251500ca50a26d0e566ec8129a

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            bf4afeeef7581b8aaa908af038f0be87

            SHA1

            abf815a433bb36bcdd08eb92b0b60869b28b439d

            SHA256

            9b6135cf556f05253370e6be2876715e12f1a19dbecc97cfb5bd1de25ae981bd

            SHA512

            6ad2b49cec212ed0ddc56c9b34dca59d896078c45ae600b30aedeae98a07077766ba255d21ba0cd44c3cb3e07ae3c02454c149251500ca50a26d0e566ec8129a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            27a369f5b7e69e2af1316f1c63a27605

            SHA1

            ff087d58e6f83193ec7a0aefd3340504d7a90d2f

            SHA256

            f4e8c0858c44f75989c1758152b8e0de1459d73ac5d84c89bc7a4413836909dc

            SHA512

            d6bf711501e96f9ebbcfeb1c0d891ff3da3edb0b1fec02708e70e0516d17edf7cf40950b67bc17d33758575c973bbc4413efb3a5175018b9a80a4c096f606fc4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            27a369f5b7e69e2af1316f1c63a27605

            SHA1

            ff087d58e6f83193ec7a0aefd3340504d7a90d2f

            SHA256

            f4e8c0858c44f75989c1758152b8e0de1459d73ac5d84c89bc7a4413836909dc

            SHA512

            d6bf711501e96f9ebbcfeb1c0d891ff3da3edb0b1fec02708e70e0516d17edf7cf40950b67bc17d33758575c973bbc4413efb3a5175018b9a80a4c096f606fc4

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            27a369f5b7e69e2af1316f1c63a27605

            SHA1

            ff087d58e6f83193ec7a0aefd3340504d7a90d2f

            SHA256

            f4e8c0858c44f75989c1758152b8e0de1459d73ac5d84c89bc7a4413836909dc

            SHA512

            d6bf711501e96f9ebbcfeb1c0d891ff3da3edb0b1fec02708e70e0516d17edf7cf40950b67bc17d33758575c973bbc4413efb3a5175018b9a80a4c096f606fc4

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fd9bdea699a9c60c0ef10e19bfdbaa03

            SHA1

            8797e2c3dafb6d795108ca858b2abd3e5f1fdc76

            SHA256

            4d23a240c744b89dc343801305239b5dc0b3ce51435b1c822ac193f7903ababb

            SHA512

            a002b9739e24fd612e54dd4dd8c22e2ea4c8412264541904b04f639d689d17507cce008b1718c181dee011c76f7fea5c973c555aef82290e5dcd57ef233e6cce

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            fd9bdea699a9c60c0ef10e19bfdbaa03

            SHA1

            8797e2c3dafb6d795108ca858b2abd3e5f1fdc76

            SHA256

            4d23a240c744b89dc343801305239b5dc0b3ce51435b1c822ac193f7903ababb

            SHA512

            a002b9739e24fd612e54dd4dd8c22e2ea4c8412264541904b04f639d689d17507cce008b1718c181dee011c76f7fea5c973c555aef82290e5dcd57ef233e6cce

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e12c1d7353c9f85473f471cd74e188f9

            SHA1

            976728fe0766f523c30bbf033b071f58371f3c61

            SHA256

            d7df5fbe851bd502e5a2393c10aa637b3ddcf22ae24f86c21d67617471f30086

            SHA512

            9b5a0552d3f70b5ba8fee1815f3353ef3053457aace7c99c12743f82c6b54ef681685564dea4cd3c1bbcc7944066ace95e2a80fe31fc8f2c93b5aa3ba598c4e5

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e12c1d7353c9f85473f471cd74e188f9

            SHA1

            976728fe0766f523c30bbf033b071f58371f3c61

            SHA256

            d7df5fbe851bd502e5a2393c10aa637b3ddcf22ae24f86c21d67617471f30086

            SHA512

            9b5a0552d3f70b5ba8fee1815f3353ef3053457aace7c99c12743f82c6b54ef681685564dea4cd3c1bbcc7944066ace95e2a80fe31fc8f2c93b5aa3ba598c4e5

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e12c1d7353c9f85473f471cd74e188f9

            SHA1

            976728fe0766f523c30bbf033b071f58371f3c61

            SHA256

            d7df5fbe851bd502e5a2393c10aa637b3ddcf22ae24f86c21d67617471f30086

            SHA512

            9b5a0552d3f70b5ba8fee1815f3353ef3053457aace7c99c12743f82c6b54ef681685564dea4cd3c1bbcc7944066ace95e2a80fe31fc8f2c93b5aa3ba598c4e5

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c632ebcab3cf58f65219098fabf241f6

            SHA1

            846ea388b353bb79fa8074bbdd7b06a4426d9ab7

            SHA256

            a87e1d2a54380f3bc2db0e321a77a759a5817053297302d85d01deedc3ca3fd0

            SHA512

            96e9ae2a84d2b5f2df72d7683710603b28a36bedf121b803a6aab6207d1eb308b242dffc9e43bd923e35129efcd63abd92ef538aa4825f527b09cb408e62c0a6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c632ebcab3cf58f65219098fabf241f6

            SHA1

            846ea388b353bb79fa8074bbdd7b06a4426d9ab7

            SHA256

            a87e1d2a54380f3bc2db0e321a77a759a5817053297302d85d01deedc3ca3fd0

            SHA512

            96e9ae2a84d2b5f2df72d7683710603b28a36bedf121b803a6aab6207d1eb308b242dffc9e43bd923e35129efcd63abd92ef538aa4825f527b09cb408e62c0a6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c632ebcab3cf58f65219098fabf241f6

            SHA1

            846ea388b353bb79fa8074bbdd7b06a4426d9ab7

            SHA256

            a87e1d2a54380f3bc2db0e321a77a759a5817053297302d85d01deedc3ca3fd0

            SHA512

            96e9ae2a84d2b5f2df72d7683710603b28a36bedf121b803a6aab6207d1eb308b242dffc9e43bd923e35129efcd63abd92ef538aa4825f527b09cb408e62c0a6